RU2091037C1 - Method of treating poultry manure for animal fodder - Google Patents

Abstract

FIELD: agriculture; in particular, fodder production. SUBSTANCE: for deodorizing ammonia odor of wet poultry manure it is mixed with whey and/or melassa to full deodorization. Then thermal disinfection of mixture is conducted at 95-100 C for no less 1 h. For reduction of expenditures, whey and melassa is preliminarily subjected to lactic-acid fermentation and when mixing with manure its pH is taken up to 6.5-6.8. EFFECT: higher efficiency. 3 cl, 1 tbl

Description

 The invention relates to feed production.

 The purpose of the invention is the elimination of the smell of ammonia from wet bird droppings.

 Bird droppings are mixed with whey and / or molasses. In this case, ammonium hydroxide, formed by dissolving ammonia in water and giving the wet litter an ammonia odor, interacts with lactic acid contained in serum and molasses, with the formation of ammonium lactate, an odorless water-soluble salt. The resulting mixture is thermally disinfected.

 In this case, before mixing, whey and / or molasses are subjected to lactic acid fermentation. This increases the content of lactic acid in them and allows, if desired, to reduce the consumption of deodorants.

 Whey and / or molasses are introduced into bird droppings until the pH of the mixture reaches 6.5-6.8, which allows replacing the organoleptic control of eliminating the smell of ammonia with instrumental, minimizing the consumption of deodorants.

During thermal disinfection, the resulting mixture is heated to 95-100 ^o C and maintained at this temperature for at least 60 minutes, which allows the use of other technological equipment compared to known methods.

Example 1. Conducted three experiments. Bird droppings with a humidity of 75% were mixed alternately with whey with an acidity of 30 ^o T, molasses with an acidity of 60 ^o T and serum and molasses of the same acidity until the ammonia odor was eliminated, after which the resulting mixture was subjected to thermal disinfection at a temperature of 160-170 ^o C for 90 min In the first experiment, whey was consumed in an amount of 40% of the mass of litter, in the second 20% molasses, in the third 20% serum and 10% molasses.

Example 2. Whey and molasses were subjected to lactic acid fermentation. Spent three experiments. Bird droppings with a moisture content of 75% were mixed alternately with whey with an acidity of 120 ^o T, molasses with an acidity of 240 ^o T and together with serum and molasses of the same acidity until the ammonia odor was eliminated. At the same time, the pH of the mixture was measured. At pH 6.8, traces of the smell of ammonia were felt, at a pH of 6.5 the smell of ammonia completely disappeared, after which the mixture was subjected to thermal disinfection at a temperature of 160-170 ^o C for 90 minutes In the first experiment, whey was consumed in an amount of 10% of the mass of litter, in the second 5% molasses, in the third 5% serum and 2.5% molasses.

Example 3. Conducted four experiments. The bird droppings with a humidity of 75% and milk whey with an acidity of 120 ^o T were mixed to obtain a pH of 6.5, after which the resulting mixture was subjected to thermal disinfection in four different modes: at a temperature of 90-95 ^o C for 30 minutes, at the same temperature for 60 minutes, at a temperature of 95-100 ^o C for 30 minutes and at the same temperature for 60 minutes At the same time, a bacteriological study of the disinfected mixture was carried out. In the first experiment, the microbial contamination of the mixture was higher than 500 thousand microbial bodies in 1 g; in the second experiment, 300 thousand in the third 50 thousand were not found in the fourth.

Example 4. Wet bird droppings were mixed with whey and molasses, which had previously been subjected to lactic acid fermentation, to obtain a pH of 6.5, after which the mixture was thermally disinfected at a temperature of 95-100 ^° C for 60 minutes. Received a liquid ammonia-protein concentrate odorless ammonia and microbial contamination, suitable for feeding to ruminants / cm table.

 In experiments on fattening gobies weighing 160-230 kg, diets were balanced, balanced in exchange energy and digestible protein. In the experimental group, 50% of the physical mass of feed grain, hay, haylage and silage was replaced by nutritious liquid ammonium-protein concentrate and wheat straw. The average daily gain in live weight of gobies in the experimental group was 988 g / day, and the control 894 g / day.

Raw materials necessary for the implementation of the invention:
poultry manure secondary raw materials obtained by growing and keeping poultry according to ONTP 4-79. All-Union norms for technological design of poultry enterprises ONTP 4-79 (Ministry of Agriculture of the USSR, under the editorship of G.A. Ignatiev and V.I. Fedorov, M. 1980, p. 59);
milk serum according to OST 10-02-02-3-87;
molasses secondary raw materials obtained in the production of milk sugar according to OST 4963-85.

Claims (3)

 1. The method of processing poultry manure for animal feed, including its thermal disinfection, characterized in that, in order to eliminate the smell of ammonia, before, and / or during and / or after thermal disinfection, the bird droppings are mixed with milk whey and / or molasses until the pH of the mixture is not more than 6.8.  2. The method according to claim 1, characterized in that before mixing the whey and / or molasses is subjected to lactic acid fermentation. 3. The method according to p. 1, characterized in that the thermal disinfection is carried out at 95 100 ^o With at least 30 minutes

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